Add enable-app-launcher-shim to chrome://flags.

chrome/common/chrome_switches.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/common/chrome_switches.h"
 
 #include "base/base_switches.h"
 #include "base/command_line.h"
 
 namespace switches {
@@ skipping 1505 matching lines @@
 // Specifies which password store to use (detect, default, gnome, kwallet).
 const char kPasswordStore[]                 = "password-store";
 #endif
 #endif  // OS_POSIX
 
 #if defined(OS_MACOSX)
 // Enables the app list OSX .app shim, for showing the app list. Takes an
 // optional argument: --enable-app-list-shim=0 will delete a previously created
 // .app folder for the app list shim. Any other argument, or no argument, will
 // create it.
-extern const char kEnableAppListShim[]      = "enable-app-list-shim";
+const char kEnableAppListShim[]             = "enable-app-list-shim";
 
 // Enables the tabs expose feature ( http://crbug.com/50307 ).
 const char kEnableExposeForTabs[]           = "enable-expose-for-tabs";
 
 // Performs Keychain reauthorization from the command line on behalf of a
 // special Keychain reauthorization stub executable. Used during auto-update.
 const char kKeychainReauthorize[]           = "keychain-reauthorize";
 
 // A process type (switches::kProcessType) that relaunches the browser. See
 // chrome/browser/mac/relauncher.h.
@@ skipping 55 matching lines @@
 
 // -----------------------------------------------------------------------------
 // DO NOT ADD YOUR CRAP TO THE BOTTOM OF THIS FILE.
 //
 // You were going to just dump your switches here, weren't you? Instead, please
 // put them in alphabetical order above, or in order inside the appropriate
 // ifdef at the bottom. The order should match the header.
 // -----------------------------------------------------------------------------
 
 }  // namespace switches